Window tint laws in Ontario confuse a lot of people. Some drivers think any tint is illegal. Others assume they can go as dark as they want. The reality is somewhere in the middle, and knowing the rules can save you a fine and a failed safety inspection. Here is what you need to know in 2026.
Ontario Window Tint Law — The Basics
Ontario's Highway Traffic Act (HTA) Section 73(3) requires that the front side windows (driver and passenger) allow at least 70% of visible light to pass through. This is measured as Visible Light Transmission (VLT). Since factory glass already blocks some light (typically around 75-80% VLT), this means you can only add a very light tint to the front side windows and still remain legal.
The rear passenger windows and the rear windshield have no VLT restriction in Ontario. You can go as dark as you want on those windows. This is why you see many vehicles with dark rear windows and lighter front windows.
For the windshield, you can only apply tint on the visor strip — the area above the AS-1 line, which is roughly the top 6 inches. No tint is allowed below that line on the windshield.
What VLT Percentages Actually Look Like
VLT percentages can be confusing because a lower number means darker tint. Here is what each level looks like in practice. 5% VLT is limo tint — nearly impossible to see through from outside, very dark inside. This is only legal on rear windows in Ontario. 15% VLT is a dark tint where you can barely see inside. Popular on rear windows for privacy. 20% VLT is slightly lighter than 15%, still provides strong privacy. A common choice for rear windows across the GTA.
35% VLT is a medium tint that lets you see inside if you look closely. This is the darkest you should consider for front side windows if you want to push the limit while still being in the legal grey area. 50% VLT is a light tint — noticeable but subtle. Provides UV and heat protection without changing the look much. 70% VLT is nearly clear and is the legal minimum for front side windows. Ceramic film at 70% VLT still blocks significant infrared heat.
What Happens If You Get Pulled Over
If a police officer suspects your front window tint is too dark, they can issue an HTA ticket. The fine is typically $110. They may also issue a vehicle inspection order, which means you have to take your car to a licensed inspection station and have the tint removed or replaced to pass. That adds the cost of removal, re-tinting with a legal film, and the inspection fee.
In practice, enforcement varies. Some officers carry a tint meter and will test your windows on the spot. Others make a judgment call based on appearance. Either way, running illegal tint on your front windows is a gamble that can cost you time and money.
Medical Exemptions
Ontario does allow medical exemptions for darker front window tint. If you have a condition like lupus, photosensitivity, or another medical reason that requires reduced sun exposure, you can apply for an exemption through the Ministry of Transportation. You will need a letter from your doctor and must carry the exemption documentation in your vehicle at all times. The process takes a few weeks, and the exemption specifies the VLT level you are allowed.
Our Recommendation
For most customers in Scarborough and the GTA, we recommend 35% VLT ceramic film on the front side windows and 15-20% on the rear windows and back windshield. The 35% on the front provides noticeable heat rejection and glare reduction while keeping you in a reasonable range. On the rear, 15-20% gives you strong privacy and heat protection.
If you want to stay strictly legal, we can install a 70% VLT ceramic film on the front sides. Even though it looks nearly clear, ceramic film at this VLT level still blocks up to 60% of infrared heat and 99% of UV rays. You get the protection benefits without any visual change or legal risk.
Why Ceramic Film Matters More Than Percentage
The type of film matters more than the darkness level when it comes to heat rejection. Cheap dyed films might look dark but they do very little to block heat. They also fade to purple within a year or two. Carbon films are a step up and provide decent heat rejection without the fading issue.
Ceramic film is the top tier. It uses nano-ceramic particles to block infrared heat without needing to be dark. A 70% VLT ceramic film rejects more heat than a 20% VLT dyed film. That means you can stay legal on your front windows and still keep your car significantly cooler in the summer. At Beyond Detail, we exclusively install ceramic window film because it performs better and lasts longer.
If you are considering window tint for your vehicle in Scarborough or anywhere in the GTA, give us a call at (647) 689-6109. We will walk you through the options, show you film samples, and help you choose the right setup for your vehicle and your needs.
